Controls
80
There are several types of control system alterna-
tives available:
Mechanical control systems
With a mechanical control system communication be-
tween the engine/reverse gear is done with push-pull
cables. This type of system could require a little more
effort and be less distinct, especially with long cable
lengths and more than one control station.
This installation manual mainly covers this type of
installation.
Electrical control systems
In fully electrical systems, the control communicates
with the engine via electrical signals and can only be
used on electrically governed engines, as the Volvo
Penta EVC engines.
It offers very simple installation as well as smooth
handling with long cables and several control sta-
tions. For further details about installation of EVC
control systems see
Installation, Electronic Vessel
Control EVC.
Electrical to mechanical control systems
In electrical to mechanical control systems, the elec-
trical control communicates with actuators usually
located in the engine room via electrical wires. The
actuator transforms the electrical signal to a mechan-
ical movement. From the actuator, a push-pull cable
runs to the engine/reverse gear and there installation
is done the same way as with a mechanical control
system.
Hydraulic and pneumatic controls.
The principle behind communication between control
and engine/reverse gear is to use hoses or pipes with
hydraulic oil or air. Hydraulic and pneumatic control
systems give advantages similar to those of an elec-
trical control system. They are rather easy to install in
boats with several control stations. They also require
very little effort to use in installation with several con-
trol stations or long distances.
Alternative operating stations
The controls must be duplicated for each operating
station. In a mechanical control, the switch-over for
shifting with controls for the different operating sta-
tions can be carried out automatically if a dual station
unit is installed.
The speed control cables from the two controls are
connected at the fuel injection pump by means of a
speed control kit. See
Connecting the speed con-
trol cable in chapter Controls.
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